Microscopy Morphology — 3D self-branched zinc-cobalt Oxide@N-doped carbon hollow nanowall arrays for high-performance asymmetric supercapacitors and oxygen electrocatalysis

Measurement evidence

Microscopy Morphology

3D self-branched zinc-cobalt Oxide@N-doped carbon hollow nanowall arrays for high-performance asymmetric supercapacitors and oxygen electrocatalysis · Kong D., Wang Y., Huang S. et al. · Energy Storage Materials · 2019 · 653-663

4 measurement groups · 9 results

Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.

SEM

Co-MOF/CTs · Electrode

Co-MOF nanowall arrays grown on CTs; thickness estimated from enlarged SEM view.

Geometry
2D Co-MOF nanowalls on CTs
Context
pristine MOF precursor/control
Measurement source
655 · 3. Results and discussion · Fig. S2b-c
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Co-MOF nanowall thicknessaverage thickness of around 185 nm185 nmaroundText
Approximate
655 · 3. Results and discussion · Fig. S2b-c

Photographs and SEM

Co-MOF nanowall arrays on Fe foil, Ni foam and graphite paper · Thin Film

Substrate generality of Co-MOF nanowall array growth on Fe foil, Ni foam and graphite paper.

Context
Co-MOF precursor control
Measurement source
SI p.8 · Part 3 Figures · Fig. S4
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Co-MOF growth on alternative substratesCo-MOF nanowall arrays can grow on Fe foil, Ni foam and graphite paperText
Qualitative
655 · 3. Results and discussion · Fig. S4

FESEM, TEM, HRTEM, SAED and EDS mapping

3D self-branched ZnCo2O4@NC/CTs · Electrode

Morphology, hollow structure, lattice spacing and elemental distribution of Co-MOF-derived ZnCo2O4@NC nanowalls.

Geometry
3D self-branched nanowall arrays on CTs
Context
target MOF-derived composite electrode
Measurement source
656 · 3. Results and discussion · Fig. 2
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
EDS elemental distributionZn, Co, N, C and O uniformly distributed on nanowall arrayText
Qualitative
656 · 3. Results and discussion · Fig. 2g
Zn/Co atomic ratioabout 2.02 dimensionlessaboutText
Approximate
656 · 3. Results and discussion · Fig. 2g(viii)
ZnCo2O4 lattice spacing (111)0.47 nm0.47 nmText
Rounded Reported
656 · 3. Results and discussion · Fig. 2f
ZnCo2O4 lattice spacing (311)0.24 nm0.24 nmText
Rounded Reported
656 · 3. Results and discussion · Fig. 2f
target morphology3D self-branched hollow nanowall arrays with porous ZnCo2O4 nanoflakes on hollow NC nanowallsText
Qualitative
656 · 3. Results and discussion · Fig. 2a-c
ZnCo2O4 nanoparticle diameter in nanoflakes~10 nm in diameter10 nm~Text
Approximate
656 · 3. Results and discussion · Fig. 2f

SEM and EDS microanalysis

ZnCo-MOF/CTs etching-time series (10, 20, 30 and 60 min) · Electrode

ZnCo-MOF/CTs precursor morphology and elemental content compared after 10, 20, 30 and 60 min Zn2+ exchange/etching.

Context
MOF precursor optimisation series before oxide/carbon conversion
Measurement source
SI p.10-SI p.11 · Part 3 Figures · Fig. S6-S7
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
effect of ZnCo-MOF etching time on morphologyshort-time etching causes insufficient/semi-hollow structures; excess Zn(NO3)2 causes nanoflake overgrowth and severe etching/destructionText
Qualitative
656 · 3. Results and discussion · Fig. S6-S7